LT4276BIUFD#TRPBF

$6.12

Description：IC POE CNTRL 1 CHANNEL 28QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:dc482d185863 Category: Power Over Ethernet (PoE) Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC POE CNTRL 1 CHANNEL 28QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Controller (PD), DC/DC
Number of Channels：1
Power - Max：25.5 W
Internal Switch(s)：No
Auxiliary Sense：Yes
Standards：802.3at (PoE+), 802.3af (PoE)
Voltage - Supply：60V (Max)
Current - Supply：2mA (Max)
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：28-WFQFN Exposed Pad
Supplier Device Package：28-QFN (4x5)

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LT4276BIUFD#TRPBF

Overview

The LT4276BIUFD#TRPBF is a Powered Device (PD) controller supporting IEEE 802.3af, 802.3at, and LTPoE++ standards. It integrates an isolated switching regulator controller for forward and flyback topologies with auxiliary power support. The device operates within a 37V to 57V input range and supports output powers up to 90W. It features a 2mA supply current and functions in temperatures from -40°C to +125°C. Packaged in a 28-QFN (4x5mm) tape and reel format, it enables high-efficiency DC-DC conversion for PoE applications.

Feature Summary

Supports IEEE 802.3af/at and LTPoE++ Powered Device protocols
Integrates isolated switching regulator controller for forward and flyback topologies
Enables auxiliary power input operation alongside PoE sources
Provides pin-for-pin compatibility within the LT4276 family

Applications

High-power PoE+ powered devices requiring auxiliary input
LTPoE++ powered equipment designs
Isolated DC-DC converters in network infrastructure
Industrial IoT nodes with extended power budgets

Procurement Notes

Verify the specific suffix #TRPBF confirms tape and reel packaging versus tube variants. Confirm availability status as distribution channels may list limited stock or end-of-life conditions. Ensure the order matches the exact temperature grade and package dimensions required for the target PCB layout.

Selection Notes

Select this component when designing PDs requiring LTPoE++ compliance or auxiliary power integration. Compare against LT4276AHUFD or LT4276BUFD if different thermal grades or packaging formats are needed. Verify that the application circuit supports the required forward or flyback topology for the target output power level.

Part Context

This part belongs to the LT4276 series of Ethernet Power over Ethernet controllers. It serves as a bridge between standard PoE switches and isolated power stages. The BI variant typically denotes specific thermal or electrical characteristics within the broader product line managed by Analog Devices.

Replacement Considerations

LT4276AHUFD#TRPBF and LT4276BUFD#TRPBF are pin-compatible alternatives within the same family. Verify temperature range and package consistency before substitution.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.